difference-rs 3.2.0

A Rust text diffing and assertion library.
Documentation 
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#![expect(missing_docs)]
use difference_rs::{Changeset, Difference};
use std::io::Write;

// Screenshot:
// https://raw.githubusercontent.com/naomijub/difference-rs/master/assets/github-style.png

#[allow(unused_must_use)]
fn main() {
    let text1 = "Roses are red, violets are blue,\n\
                 I wrote this library here,\n\
                 just for you.\n\
                 (It's true).";

    let text2 = "Roses are red, violets are blue,\n\
                 I wrote this documentation here,\n\
                 just for you.\n\
                 (It's quite true).";

    let Changeset { diffs, .. } = Changeset::new(text1, text2, "\n");

    let mut t = term::stdout().unwrap();

    for i in 0..diffs.len() {
        #[allow(clippy::indexing_slicing)]
        match diffs[i] {
            Difference::Same(ref x) => {
                t.reset().unwrap();
                writeln!(t, " {x}");
            }
            Difference::Add(ref x) => {
                if let Some(Difference::Rem(y)) = diffs.get(i - 1) {
                    t.fg(term::color::GREEN).unwrap();
                    write!(t, "+");
                    let Changeset { diffs, .. } = Changeset::new(y, x, " ");
                    for c in diffs {
                        match c {
                            Difference::Same(ref z) => {
                                t.fg(term::color::GREEN).unwrap();
                                write!(t, "{z}");
                                write!(t, " ");
                            }
                            Difference::Add(ref z) => {
                                t.fg(term::color::WHITE).unwrap();
                                t.bg(term::color::GREEN).unwrap();
                                write!(t, "{z}");
                                t.reset().unwrap();
                                write!(t, " ");
                            }
                            Difference::Rem(_) => (),
                        }
                    }
                    writeln!(t);
                } else {
                    t.fg(term::color::BRIGHT_GREEN).unwrap();
                    writeln!(t, "+{x}");
                }
            }
            Difference::Rem(ref x) => {
                t.fg(term::color::RED).unwrap();
                writeln!(t, "-{x}");
            }
        }
    }
    t.reset().unwrap();
    t.flush().unwrap();
}